searbe · August 7, 2012 09:48 · Aug 7, 2012
diff --git a/parse_xlsx.php b/parse_xlsx.php
@@ -0,0 +1,69 @@
+<?php
+
+/**
+ * I had to parse an XLSX spreadsheet (which should damn well have been a CSV!)
+ * but the usual tools were hitting the memory limit pretty quick. I found that
+ * manually parsing the XML worked pretty well. Note that this, most likely,
+ * won't work if cells contain anything more than text or a number (so formulas,
+ * graphs, etc ..., I don't know what'd happen).
+ */
+
+$inputFile = '/path/to/spreadsheet.xlsx';
+$dir = '/path/to/tmp/dir';
+
+// Unzip
+$zip = new ZipArchive();
+$zip->open($inputFile);
+$zip->extractTo($dir);
+
+// Open up shared strings & the first worksheet
+$strings = simplexml_load_file($dir . '/xl/sharedStrings.xml');
+$sheet   = simplexml_load_file($dir . '/xl/worksheets/sheet1.xml');
+
+// Parse the rows
+$xlrows = $sheet->sheetData->row;
+
+foreach ($xlrows as $xlrow) {
+    $arr = array();
+
+    // In each row, grab it's value
+    foreach ($xlrow->c as $cell) {
+        $v = (string) $cell->v;
+
+        // If it has a "t" (type?) of "s" (string?), use the value to look up string value
+        if (isset($cell['t']) && $cell['t'] == 's') {
+            $s  = array();
+            $si = $strings->si[(int) $v];
+
+            // Register & alias the default namespace or you'll get empty results in the xpath query
+            $si->registerXPathNamespace('n', 'http://schemas.openxmlformats.org/spreadsheetml/2006/main');
+
+            // Cat together all of the 't' (text?) node values
+            foreach($si->xpath('.//n:t') as $t) {
+                $s[] = (string) $t;
+            }
+
+            $v = implode($s);
+        }
+
+        $arr[] = $v;
+    }
+
+    // Assuming the first row are headers, stick them in the headers array
+    if (count($headers) == 0) {
+        $headers = $arr;
+    } else {
+        // Combine the row with the headers - make sure we have the same column count
+        $values = array_pad($arr, count($headers), '');
+        $row    = array_combine($headers, $values);
+
+        /**
+         * Here, do whatever you like with the [header => value] assoc array in $row.
+         * It might be useful just to run this script without any code here, to watch
+         * memory usage simply iterating over your spreadsheet.
+         */
+    }
+}
+
+@unlink($dir);
+@unlink($inputFile);